Berkshire's CEO has made a significant move by visiting Tokyo for the first time. This visit holds importance as it signals potential further investments. The CEO has indicated that Berkshire may increase its stakes in major trading houses.

Further details about the visit and potential investments are available from the source. The source reports on the CEO's intentions regarding Japan's five major trading houses.

More information can be found at finance.biggo.com, which provides updates on Berkshire's plans and the CEO's visit.